#ifndef _ChopImageBelowLowerBound_H_
#define _ChopImageBelowLowerBound_H_
/*
 * Copyright (c) 2009, Hans J. Johnson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the Nathan Kline Institute nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "itkImage.h"

template <class ImageType>
void ChopImageBelowLowerBound(typename ImageType::Pointer inputVolume,
                              const typename ImageType::PixelType BackgroundFillValue,
                              const double PhysicalLowerBound)
{
  // And now, we are going to chop out everything inferior to
  // PhysicalLowerBound:
  typedef typename itk::ImageRegionIterator<ImageType> IteratorType;
  IteratorType ItPixel( inputVolume, inputVolume->GetLargestPossibleRegion() );
  typename ImageType::PointType PixelPhysicalPoint;
  while( !ItPixel.IsAtEnd() )
    {
    inputVolume->TransformIndexToPhysicalPoint(ItPixel.GetIndex(), PixelPhysicalPoint);
    if( PixelPhysicalPoint[2] < PhysicalLowerBound )
      {
      ItPixel.Set(BackgroundFillValue);
      }
    ++ItPixel;
    }
}

#endif
